How to Become an Approved Tester

We only accept backflow test results from testers who are on our Approved Tester List.

How to become a CWS Approved Backflow Tester


  1. Complete SCDHEC certification.
  2. Attend a Charleston Water System orientation session. Contact us for more info.
  3. Follow our policies and procedures as outlined in our Cross Connection Control Program Manual.
  4. Tester recertification is required every three years ($80 fee.)

Upcoming Backflow Tester Orientations

(2023 dates)
January 18
April 19
July 19
October 18

Held at our main office, 103 St. Philip Street, Charleston, SC 29403. Register: backflow@charlestoncpw.com

    Tester Recertification

    To remain on our List of Approved Backflow Testers, you must complete recertification every three years.

    Charleston Water System is an SCDHEC backflow recertification site, and we hold recertification tests quarterly. The fee is $80.


    Backflow Tester Recertification Tests

    Tests are held at our main office, 103 St. Philip Street, Charleston, SC 29403. To register, send an email to backflow@charlestoncpw.com.

    Upcoming Dates